<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script src="https://cdn.jsdelivr.net/npm/vue@2.6.14/dist/vue.js"></script>
    <div id="app">
        <span id="num">{{num}}</span>
        <button @click="num++">点赞</button>
        <h2>{{name}},有{{num}}个人点赞</h2>

    </div>
    <script>
        let vm = new Vue({
            el: "#app",
            data: {
                name: "张三",
                num: 0

            },
            methods: {
                show() {
                    return this.name;
                },
                add() {
                    this.num++
                }
            },
            beforeCreate() {
                console.log("======beforeCreate======");
                console.log("数据模型未加载：" + this.name, this.num);
                console.log("方法未加载：" + this.show());
                console.log("html模板未加载：" + document.getElementById("num"));

            },
            created() {
                console.log("======created======");
                console.log("数据模型已加载：" + this.name, this.num);
                console.log("方法已加载：" + this.show());
                console.log("html模板已加载：" + document.getElementById("num"));
                console.log("html模板未渲染：" + document.getElementById("num").innerText);

            },
            beforeMount() {
                console.log("======beforeMount======");
                console.log("html模板未渲染：" + document.getElementById("num").innerText);
            },
            mounted() {
                console.log("======mounted======");
                console.log("html模板已渲染：" + document.getElementById("num").innerText);
            },
            beforeUpdate() {
                console.log("======beforeUpdate======");
                console.log("数据模型已更新：" + this.num);
                console.log("html模板未更新：" + document.getElementById("num").innerText);
            },
            updated() {
                console.log("======updated======");
                console.log("数据模型已更新：" + this.num);
                console.log("html模板已更新：" + document.getElementById("num").innerText);
            },
        });
    </script>
</body>

</html>